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Home Q & A Board Biology-Related Homework Help Medicine Medical Administration
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Nalu Nalu
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6 years ago
The human body has natural barriers to infection. Which of the following is considered one of these natural barriers to infection?
 
  a. Skin
  b. Gastrointestinal tract
  c. Mucous membranes
  d. All of the above
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eehughesseehughess
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6 years ago
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Nalu Author
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6 years ago
Smart ... Thanks!
dedricgard
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Yesterday
this is exactly what I needed
logbi
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2 hours ago
Just got PERFECT on my quiz
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